﻿#region LicenseHeader

// Copyright 2012 The Trustees of Indiana University.  All rights reserved.
// 
// The Indiana University licenses this file to you under the Apache License, 
// Version 2.0 (the "License"); you may not use this file except in compliance 
// with the License.  You may obtain a copy of the License at 
// 
// http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software 
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
//  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  
// See the License for the specific language governing permissions and 
// limitations under the License.
// 
// @author Thilina Gunarathne (tgunarat@indiana.edu)

#endregion

using System;
using System.Collections.Generic;
using AzureMRCore.DataTypes;
using AzureMRCore.Primitives;

namespace AzureMRCore.InputFormat
{
    public interface IInputFormat
    {
        // from TCP BCast primitive
        void Init(IDictionary<int, BCastDataProduct> inputRecords, int numMapTasks);
        IValue FromBytes(byte[] values);
    }

    //TODO extend the above interface
    public interface IInputFormat<K, V> where K : Key
    {
        void Init(string inputFile);
        K GetCurrentKey();
        V GetCurrentValue();
        Boolean Next();
        Boolean HasNext();
        void Close();
        List<KeyValuePair<K, V>> GetAllPairs();
        //List<KeyValuePair<K, V>> GetAll(string inputFile);
    }
}